SSH, or secure shell, is an encoded convention used to manage and speak with workers. When working with a Ubuntu worker, odds are you will invest the greater part of your energy in a terminal meeting associated with your worker through SSH.
In this post, We will generate the ssh key using ubuntu 18.04 LTS.
Step 1: Creating the RSA Key Pair
Use the given command to generate the ssh-key pair.
sudo ssh-keygenStep 2: Copy the Public Key to Ubuntu Server
Now we need to copy the ssh key with given command to target linux machine.
sudo ssh-copy-id username@remote_hostStep 3: Disable Password Authentication on your Server
To protect our linux machine, We need to disable password based authentication with linux machine, It will be work only ssh key based authentication.
sudo vim /etc/ssh/sshd_configChange the PasswordAuthentication yes to no like this.
PasswordAuthentication noSave and exit from the text editor, To get new change in ssh, We need to restart the ssh service.
sudo systemctl restart sshd.serviceConclusion
We have successfully generate the ssh key and change the auth method on Ubuntu 20.04 LTS.
How to Set Up SSH Keys on Ubuntu 18.04 LTS
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